{"id":112854,"date":"2024-01-12T15:10:27","date_gmt":"2024-01-12T13:10:27","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/proekt-openssh-opublikoval-plan-prekrashheniya-podderzhki-dsa"},"modified":"2024-01-12T15:10:27","modified_gmt":"2024-01-12T13:10:27","slug":"proekt-openssh-opublikoval-plan-prekrashheniya-podderzhki-dsa","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/proekt-openssh-opublikoval-plan-prekrashheniya-podderzhki-dsa","title":{"rendered":"Projekt OpenSSH zve\u0159ejnil pl\u00e1n ukon\u010den\u00ed podpory pro DSA","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V\u00fdvoj\u00e1\u0159i projektu OpenSSH p\u0159edstavili pl\u00e1n ukon\u010den\u00ed podpory kl\u00ed\u010d\u016f zalo\u017een\u00fdch na algoritmu DSA. Podle sou\u010dasn\u00fdch standard\u016f kl\u00ed\u010de DSA nezaji\u0161\u0165uj\u00ed dostate\u010dnou \u00farove\u0148 ochrany, nebo\u0165 pou\u017e\u00edvaj\u00ed velikost soukrom\u00e9ho kl\u00ed\u010de pouze 160 bit\u016f a hash SHA1, co\u017e odpov\u00edd\u00e1 p\u0159ibli\u017en\u011b 80bitov\u00e9mu symetrick\u00e9mu kl\u00ed\u010di z hlediska \u00farovn\u011b bezpe\u010dnosti. <\/p>\n

Podle defaultn\u00edho nastaven\u00ed byla podpora kl\u00ed\u010d\u016f DSA ukon\u010dena v roce 2015, ale jejich podpora byla ponech\u00e1na jako volba, proto\u017ee tento algoritmus je jedin\u00fdm, kter\u00fd je v protokolu SSHv2 povinn\u011b implementov\u00e1n. Takov\u00fd po\u017eadavek byl p\u0159id\u00e1n, proto\u017ee p\u0159i vytv\u00e1\u0159en\u00ed a schvalov\u00e1n\u00ed protokolu SSHv2 podl\u00e9haly v\u0161echny alternativn\u00ed algoritmy patent\u016fm. Od t\u00e9 doby se situace zm\u011bnila, patenty spojen\u00e9 s RSA vypr\u0161ely, byl p\u0159id\u00e1n algoritmus ECDSA, kter\u00fd je v\u00fdrazn\u011b v\u00fdkonn\u011bj\u0161\u00ed a bezpe\u010dn\u011bj\u0161\u00ed ne\u017e DSA, a tak\u00e9 EdDSA, kter\u00fd je bezpe\u010dn\u011bj\u0161\u00ed a rychlej\u0161\u00ed ne\u017e ECDSA. Jedin\u00fdm faktorem pokra\u010dov\u00e1n\u00ed podpory DSA z\u016fst\u00e1vala kompatibilita se zastaral\u00fdmi za\u0159\u00edzen\u00edmi. <\/p>\n

Po zhodnocen\u00ed sou\u010dasn\u00e9 situace se v\u00fdvoj\u00e1\u0159i OpenSSH domn\u00edvali, \u017ee n\u00e1klady na pokra\u010dov\u00e1n\u00ed podpory nebezpe\u010dn\u00e9ho algoritmu DSA se nevypl\u00e1c\u00ed a jeho odstran\u011bn\u00ed podpo\u0159\u00ed ukon\u010den\u00ed podpory DSA v jin\u00fdch implementac\u00edch SSH a kryptografick\u00fdch knihovn\u00e1ch. V pl\u00e1novan\u00e9 dubnov\u00e9 verzi OpenSSH se po\u010d\u00edt\u00e1 se zachov\u00e1n\u00edm sestaven\u00ed s DSA, ale bude umo\u017en\u011bno jeho vypnut\u00ed b\u011bhem kompilace. V \u010dervnov\u00e9 verzi OpenSSH bude DSA ve v\u00fdchoz\u00edm nastaven\u00ed vypnut p\u0159i sestaven\u00ed a za\u010d\u00e1tkem roku 2025 bude implementace DSA odstran\u011bna z k\u00f3du. <\/p>\n

U\u017eivatel\u00e9, kte\u0159\u00ed pot\u0159ebuj\u00ed podporu DSA na stran\u011b klienta, mohou pou\u017e\u00edt alternativn\u00ed sestaven\u00ed star\u0161\u00edch v\u011btv\u00ed OpenSSH, nap\u0159\u00edklad bal\u00ed\u010dek \"openssh-client-ssh1\" dod\u00e1van\u00fd v Debianu, sestaven\u00fd na z\u00e1klad\u011b OpenSSH 7.5 a ur\u010den\u00fd pro p\u0159ipojen\u00ed k SSH server\u016fm pomoc\u00ed protokolu SSHv1, jeho\u017e podpora byla v OpenSSH 7.6 ukon\u010dena p\u0159ed \u0161esti lety.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 OpenSSH \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0438 \u043f\u043b\u0430\u043d \u043f\u0440\u0435\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u043a\u043b\u044e\u0447\u0435\u0439 \u043d\u0430 \u0431\u0430\u0437\u0435 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u0430 DSA. \u041f\u043e \u0441\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u043c \u043c\u0435\u0440\u043a\u0430\u043c DSA-\u043a\u043b\u044e\u0447\u0438 \u043d\u0435 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0442 \u0434\u043e\u043b\u0436\u043d\u043e\u0433\u043e \u0443\u0440\u043e\u0432\u043d\u044f \u0437\u0430\u0449\u0438\u0442\u044b, \u0442\u0430\u043a \u043a\u0430\u043a \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442 \u0440\u0430\u0437\u043c\u0435\u0440 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[…]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-112854","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Projekt OpenSSH zve\u0159ejnil pl\u00e1n ukon\u010den\u00ed podpory DSA | ProHoster","description":"V\u00fdvoj\u00e1\u0159i projektu OpenSSH p\u0159edstavili pl\u00e1n ukon\u010den\u00ed podpory kl\u00ed\u010d\u016f zalo\u017een\u00fdch na algoritmu 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